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The Concept of the EFI on the Victory Freedom Engine

When I bought my Victory Kingpin motorcycle I knew it had fuel injection instead of an air/fuel carburetor. Then I saw the EFI emblem on the side covers. Ok. what exactly is that? So I looked it up. EFI stands for Electronic Fuel Injection. Much like you get with most cars. But is that really better? I read on and found that the EFI system that Victory's Freedom V-Twin engine uses provides for a modern, powerful, reliable, and sure-starting system. The EFI is used instead of a carberator because the EFI delivers the correct fuel and air mixture at all times and will adjust itself automatically, via its sensors, to the changing conditions that the Freedom engine will face during operation.

The Concept of the EFI

An electronic fuel injection system uses a microprocessor to compare information it receives from sensors to a predetermined, stored set of values called maps. The EFI then decides when and for how long it should supply fuel to the engine and when to fire the spark plugs. Most EFI systems are completely maintenance free.

The EFI sensors will monitor the engines operation and send data to the engine control unit or ECU. The sensorsb report on all variables of the engines operation. The ECU will process this data and deliver the correct fuel mixture for the current
conditions. The benefits are increased power, optimal and efficient fuel burn which means lesser emissions and better gas mileage.

For optimal performance, the EFIs are tunable. The factory will progam the EFI to run lean. Lean conditions may cause decreased running performance and back fires. A lean condition will also means less emissions which satisfies the Environmental Protection Agency (EPA) requirements. There are aftermarket modules you can buy that wire into your ECU which will allow you fine tune your EFI system without having to reflash/remap the ECU. What is reflashing? When the Victory dealer installs any performance mods to your bike, they have to reflash the ECU by connecting a computer to the bike. Thy have to downlaod the corect flash software then send this software to the ECU's computer chip. If add performance parts and do not have the ECU reflashed, the EFI will not deliver the proper fuelb supply causing degradation in performance.

Contributing author to Cycle Solutions
www.CycleSolutions.net and www.KingpinCruisers.net

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